для тяжёлых условий эксплуатации(I. adjective • able or designed to withstand unusual strain (as from heat, exposure, or wear): *heavy-duty equipment *a sturdy heavy-duty glove II. adjective 1. • intensive: heavy-duty interviewing – C.G.Segre 2. • important • prominent: a heavy-duty gangster – John Schulian. WTNI Alexander Demidov)
рассчитанный на большое прохождение людей(1) not easily damaged and therefore suitable for hard physical work or to be used all the time ▪ a heavy-duty carpet 2) (informal, especially North American English) very serious or great in quantity ▪ I think you need some heavy-duty advice. OALD. Alexander Demidov)
